Printing process.



PATENTED APR. 14, 1908. H. L. RBGKARD.

PRINTING PROCESS.

APPLICATION FILED 00130, 1907.-

HENRY L. RECKARD, OF PEEKSKILL, NEW YORK.

PRINTING- PRDCE SS.

No. seems.

Specification oi Letters Patent.

Patented April 14, 1908.

Application filed October 30, 19M. Seriai No. 399,864.

To all whom it may concern:

Be it known that I, HENRY L. RECKARD, a citizen of the United States, residing at Peekskill, New York, have invented certain new and useful Improvements in a Printing Process, of which the following is a clear, full, and exact description.

My invention relates to'a printing process, and its object is to improve upon existing processes for transferring designs to a meta roller which is to be used as a printing roller, such as, for example, in the printing of oil cloth, wall paper, or fabrics.

' My invention will be set forth in the claims.

5 In the drawing, Figure 1 represents a zinc plate with a design reproduced thereon, and Fig. 2 represents a side elevation of the mechanism showing how the design is transferred to the roller.

In transferring a desired design to a print- .ing roller, great difii'culty has heretofore been experienced in properly transferring large and'delicate designs to a long printing roller, and many attempts have been made to do this other than by manuaily engraving said roller. By my invention I have been enabled to transfer delicate designs simultaneously over the entire face of a copper roller five feet long, every part of said design appearing clear and distinct even in cases where the design is made up, to a great extent, of small dots such as are produced in photo-lithography where the design is photographed through a fine screen.

In carrying out my invention I first reproduce the design on a thin flexible metallic plate, preferably a zinc plate about 1 /100 of an inch thick. This may be done in various wayspfor example, by sensitizing said plate and printing upon the same in a printing frame from a positive or negative of the desired design made through a suitable screen, or from a lithographic stone or plate, or by means of ordinary transfer paper. Such steps are well known in the art and therefore it is not considered necessary to illustrate or further describe the same, as the same would be evident to persons skilled in the art.

The inked design on the zinc plate may then be'treated with etching powder in order to fortify the ink, as is well known in the art, and the plate be then etched over the surfaces unprotected by the. ink, thereby leaving the design raised somewhat over the areas protected by the ink. Theink should then be removed. All this is well understood sign to sai in the art and therefore not considered necessary to be more specifically described.

In the drawings, 1 represents a zinc plate with the design 2 reproduced thereon in relief.

I then lay the plate down on a smooth and slightly resilient base; for example, a table 3 having asheet of smooth surfaced card board (pulp board) about 1 10 of an inch thick. The plate is then inked over the raised surfaces. An ink suitable for this. purpose is a thick ink almost like um and com osed of one-half crayon in and one-ha f litho' graphic transfer ink. This ink may be applied to the zinc plate in any desired way, but I prefer to apply it by means of a hand roller of leather faced with flexible celluloid. The copper roller 5 having been smoothed and-polished is then rolled over the zinc plate, thereby transferring the ink to the face of the roller, and I have in actual practice been able to transfer. in this manner extremely delicate designs to the roller without the distortion of the same or squashing of the ink. Obviously the ink upon the roller may then be converted into an acid resist, by dusting the same with etching powder and heating the same in the manner well known in the art,

and etching said roller over the surfaces unprotected by the ink as is well understood in the art. The roller may then be used to print upon any material desired.

What I claim is:

1. The process which consists in reproducing'a desired design on a suitable thin flexible metallic plate, etching the late thereby raising the design, laying sai plate on a smooth and slightly resilient base, inking the raised surfaces of said plate, rolling a metal roller over said plate, thereby transferrin the design to said roller, and etching sai roller over the uninked surfaces.

2. The process which consists in reproducing a desired design one suitable thin flexi- 'ble..zinc late, etching the plate thereby raising the esign, laying said plate on a smooth and slightly resilient base, inking the raised surfaces of said plate, rolling a copper roller over said plate, thereby transferring the deroller, and etching said roller over the uninked surfaces.

3. The process .which consists in reproducing a desired design on a suitable thin flexible metallic plate, etching the plate thereby raisin the desi n, layin said plate on a SIIIOOfil and slightly resiIient base of card board, inking the raised surfaces of said 7 plate, rolling thereby transferring the design to said roller, and etcliing'said roller over the uninked surfaces.

5 4, The

ing a'desired design ble, metallic raising the design plate, etching the plate thereby process which consists in reproducon a suitable thin, flexisomewhat, laying said plate on a smooth and slightly resilient base 10 of card board or it s equivalent, inking the I aid plate, raised surfaces of the design t said plate by a thick ink, rollin a metal roller over said plate, thereby 0 said roller, and roller over the uninked surfaces.

Signed at Peekskill, N. Y. this 16th day of 15 October 1907.

HENRY L. RECKARD,

Witnesses:

KATHARINE M. FL Tnos. C. MACPHER ANAGAN,

SON 

